# Substack to Social Posts AI Turn an article into evidence-linked X and LinkedIn drafts. > Canonical page: https://elysiatools.com/en/tools/substack-to-social-posts-ai - **Category:** AI Tools - **Keywords:** Substack, X, LinkedIn, Substack to Social Posts AI ## Overview Extract a public article, then edit and confirm its text. Synthetic offline preview is not AI. X threads contain 3–10 posts with a 280 weighted-character limit including numbering; LinkedIn posts allow 3,000 UTF-16 characters. Consent sends article text to an AI provider. Review facts and evidence manually before copying. Nothing is published automatically. ## Inputs - **Article** (textarea) - **Title** (text) - **Source URL** (text) - **Audience** (text) - **Call to action** (text) - **Language** (select) - **Tone** (select) - **Thread length** (number) - **Consent to send article to AI** (checkbox) - **Mode** (select) ## When to use - Adapting a published Substack or long-form article into an X thread and a LinkedIn post. - Extracting verifiable claims and source text quotes to validate factual accuracy before posting. - Drafting social copy across multiple supported languages without sending text offsite via the offline preview. ## How it works - Paste your text into Article, and optionally add Title, Source URL, Audience, and Call to action. - Choose your target Language, pick a Tone (Clear, Conversational, or Bold), and select a Thread length between 3 and 10. - Select Mode: choose Generate and check Consent to send article to AI, or choose Offline demo for a local preview. - Review the streamed hooks, evidence-linked claims, and drafts against X and LinkedIn character limits before copying. ## Use cases - Distilling an analytical newsletter into a numbered educational X thread with source citations. - Converting an essay into an executive-summary LinkedIn post tailored to a professional audience. - Auditing article claims against direct quotations using the extracted claim-and-evidence breakdown. ## Frequently asked questions ### Does this tool post directly to X or LinkedIn? No. It creates draft copy for manual review and copying; nothing is published automatically. ### What are the post character limitations? X thread posts adhere to a 280 weighted-character limit including numbering. LinkedIn posts support up to 3,000 UTF-16 characters. ### What is the difference between Generate and Offline demo modes? Generate sends your article to an AI provider with consent. Offline demo generates a synthetic local preview without AI or data transmission. ### What does the claims output provide? It extracts key assertions paired directly with supporting article evidence so you can verify facts before posting. ### Which languages can the tool output? 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